#1
key n. metal device shaped in such a way that when it is inserted into the appropriate lock the lock's mechanism can be rotated
. wn #2
key s. [
cardinal, central, fundamental, primal] serving as an essential component; "a cardinal rule"; "the central cause of the problem"; "an example that was fundamental to the argument"; "computers are fundamental to modern industrial structure"
. wn #3
key n. something crucial for explaining; "the key to development is economic integration"
. wn #4
key n. pitch of the voice; "he spoke in a low key"
. wn #5
key v. [
identify, discover, key out, distinguish, describe, name] identify as in botany or biology, for example
. wn